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Docs update

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Jeremy Ruston 2025-03-09 18:21:36 +00:00
parent 78a7aedd4b
commit 76e1c2124b
3 changed files with 20 additions and 2 deletions
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editions/tw5.com/tiddlers/filters/syntax/Let Filter Run Prefix.tid
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@ -18,7 +18,7 @@ type: text/vnd.tiddlywiki
[[run|"Filter Run"]]
"""/>
The `:let` filter run prefix assigns the result list of a filter run to a variable which is made available to the remaining [[filter runs|Filter Run]] in the [[filter expression|Filter Expression]]. Only the first item in the result list is returned when the variable is accessed in the usual way (or an empty string if the result list is empty). The special [varlist Operator] is used to access all the items in the result list.
<<.from-version "5.3.7">> The `:let` filter run prefix assigns the result list of a filter run to a variable which is made available to the remaining [[filter runs|Filter Run]] in the [[filter expression|Filter Expression]]. Only the first item in the result list is returned when the variable is accessed in the usual way (or an empty string if the result list is empty). The special [varlist Operator] is used to access all the items in the result list.
Within the filter run the [[all Operator]] with an empty parameter retrieves all the titles from the previous filter runs, instead of the usual behaviour of retieving all the titles that were passed to the filter expression.

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editions/tw5.com/tiddlers/filters/syntax/varlist Operator.tid → editions/tw5.com/tiddlers/filters/varlist Operator.tid
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@ -9,6 +9,6 @@ tags: [[Filter Operators]] [[Selection Constructors]]
title: varlist Operator
type: text/vnd.tiddlywiki
The parameter specifies the name of a variable that has been assigned a list of items by a [[let filter run prefix|Let Filter Run Prefix]]. The operator retrieves all the list items stored in the variable.
<<.from-version "5.3.7">> The parameter specifies the name of a variable that has been assigned a list of items by a [[let filter run prefix|Let Filter Run Prefix]]. The operator retrieves all the list items stored in the variable.
<<.operator-examples "varlist">>

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editions/tw5.com/tiddlers/widgets/LetListWidget.tid Normal file
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@ -0,0 +1,18 @@
title: LetListWidget
created: 20250307212252946
modified: 20250307212252946
tags: Widgets
caption: letlist
! Introduction
<<.from-version "5.3.7">> The <<.wid letlist>> widget allows multiple variables to be set in one operation, each to the list of results from evaluating a filter. It is similar to the <<.wlink LetWidget>> widget but assigns the complete list of results to the variable instead of just the first result.
! Content and Attributes
The content of the <<.wid letlist>> widget is the scope for the value assigned to the variable.
|!Attribute |!Description |
|//{attributes}// |Each attribute name specifies a variable name. The attribute value is a filter whose results are is assigned to the variable |
Attributes are evaluated in the order they are written. Attributes with the same name are allowed. Each time a duplicate attribute is encountered, it will replace the existing value set by the earlier duplicate.